Granted Patent
Utility
US 4,533,229 · App. 06/474,901
Magnetic brush developer apparatus
Inventor:
Wei Lu
Patented Case
View Patent ↗
Granted: Aug 6, 1985
Filed: Mar 14, 1983
Inventor
Wei Lu
Assignee (at issue)
EASTMAN KODAK COMPANY
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.